Mcq questions for class 10 science light reflection and. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. Reflection and refraction of electromagnetic waves by the plane. We begin with waves in a nonconducting uniform linear medium, so we are discussing solutions of.
Chapter 10 then discusses how such waves can be generated and received by antennas and antenna arrays. Like light waves, radio waves are affected by the phenomena of reflection refraction. Radio wave propagation radio propagation is the behavior of radio waves when they are transmitted, or propagated from one point on the earth to another, or into various parts of the atmosphere. We will see that the boundary conditions are satisfied only if. Reflection and refraction of electromagnetic waves at the plane boundary between two chiral media article pdf available march 2003 with 122 reads how we measure reads. The problem of reflection and refraction of a plane electromagnetic wave by a semi.
Reflection, refraction and diffraction are all boundary behaviors of waves associated with the bending of the path of a wave. Physics reflection and refraction of electromagnetic. Reflection and refraction of electromagnetic waves at a. Reflection occurs when there is a bouncing off of a barrier. On the contrary, in refraction, the waves pass through the surface, that changes their speed and direction. On the acousticelectromagnetic analogy for the reflection. Reflection of waves reflection and refraction aqa gcse.
Refraction and interference with microwaves 2 waves formed at the interface. Reflection and refraction of a plane wave at oblique incidence. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Then the wave number is electromagnetic plane wave of frequency and wave vector suppose an electromagnetic plane wave with direction of propagation to be constructed. The white light enters, gets refracted and then when exiting the prism gets refracted again.
All waves will reflect and refract in the right circumstances. Pdf reflection and refraction of electromagnetic waves at. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Theoretical analysis of reflection and refraction of electromagnetic. Reflection and refraction of emwaves at portland state university. As we are assuming no timedependence of the properties of the medium, we will fourier transform in time and consider the harmonic. The problem of reflection and refraction of a plane electromagnetic wave by a semiinfinite dielectric medium moving uniformly parallel to its surface is analyzed. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Learn quiz physics practice reflection refraction diffraction with free interactive flashcards. Setup here, we will consider the reflection and refraction of a uniform, linearly polarized, homogeneous plane wave at a horizontal interface fig. Reflection of em waves at boun in terms of the in terms of characteristic the index of impedances refraction, assuming. Chapter 10 reflection, refraction, diffraction and interference overview when waves are incident at a boundary between media such as water waves on shallow water encountering a sudden change in depth of the water or light passing either from air to glass or glass to air, part of the wave energy is reflected and part is transmitted.
This process, called refraction, is the principle behind lenses and may be used to explain many common observations from bent oars to internal reflection in prisms. Partially reflected bounces off surface partially transmitted through surface law of reflection angle of incidence angle of reflection. The science and study of radio wave reflection, refraction. In both cases, we can analyze it as waves or rays, but it is better to analyze both as waves. Physics reflection and refraction of electromagnetic waves. Therefore, because we know that f c n, is wavelength we can conclude that in the refractive region the wavelength is decreased such that 0 n 2 here, 0 is the vacuum wavelength. Reflection of waves off straight barriers follows the. In just the same way that light waves are refracted, so too radio waves can undergo refraction. The term is most frequently applied to visible light, but it also applies to all other electromagnetic waves, as well as to sound and water waves. Properties of electromagnetic waves and light reflection. Like any wave, a sound wave doesnt just stop when it reaches the end of the medium or when it. Lecture iii3 reflection and refraction of emwaves at a planeinterface between dielectrics. The wave generally changes the angle of its general direction. Electromagnetic waves plane waves polarization reflection and.
Chapter 10 reflection, refraction, diffraction and. We will see that the boundary conditions are satisfied only if reflected and transmitted waves are present. The part that enters the new medium is called the transmitted wave and the other the reflected wave. Propagation radio waves flow from the transmitters oscillating antenna to the receivers oscillating antenna but not always directly because radio waves travel in a variety of ways to the receiver, a knowledge of propagation is very important in getting the most enjoyment of amateur radio.
A classic example of refraction is a straw sticking out of a glass of water see figure. Introduction maxwells great achievement briefly summarized, in this paragraph, for what follows. This feature of refraction is used to construct refractome. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
Choose from 500 different sets of quiz physics practice reflection refraction diffraction flashcards on quizlet. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This section serves as motivation for the fact that light is an electromagnetic wave. Scattering scattering is similar to reflection, but it is a common special case that doesnt strictly follow the. The physics classroom physics tutorial sound waves and music reflection, refraction, and diffraction. Light and sound waves do all kinds of cool stuff, because they can be in the same place at the same time, unlike matter. Refraction of waves article about refraction of waves by. Figure 719 a summary of reflection and refraction phenomena across the.
The reflection and refraction of light explains how people see images, colour and even optical illusions. Sound waves and music lesson 3 behavior of sound waves. Reflection and refraction of electromagnetic waves at a plane. Light propagates in a straight line in all directions, whe n the light falls on a reflecting surface, it bounces in the same medium and this phenomenon is known as light reflection, light reflection is the bouncing returning back of light waves in the same medium when they meet a reflecting surface angle of incidence is the confined angle between the incident light. The unit wave vectors of the incident, reflected and transmitted waves can be written as the following. Directions of propagation of these waves have angles t r and t t with the normal to the boundary. Refraction can be used to show the true make up of white light. Reflection, refraction, diffraction and interference duration. When shone, as a beam through a prism, white light gets refracted and exits in the form of a spectrum of colours.
It is clear that the visible light is a limited part of the electromagnetic spectrum, properties of light waves are reflection, refraction, interference, diffraction. Reflection of electromagnetic waves physics stack exchange. Start studying physics reflection and refraction of electromagnetic waves module 1 chapter 4. Ppt reflection, refraction and diffraction powerpoint. In this lab, students determine which situation illustrates diffraction, reflection, and refraction. In a doubleslit experiment, as you decrease the space between the slits, the interference peaks decrease proportionally. At the boundary, some of the electromagnetic waves will be reflected, and some will enter the new medium and be refracted. Use of surface reflectionrefraction methods to characterize the near surface, generally the upper 100 m, is a much younger application, but is still based on about two decades of. Reflection and refraction at media interface youtube.
Note the angle of incidence is formed between the incident ray and the normal. Theoretical and computational study of reflection and refraction of electromag netic waves with ppolarized and normal incidence electric wave. Plane waves in a nonconducting medium, linear and circular polarization, reflection and refraction of electromagnetic waves at a plane interface between dielectrics. Reflection and refraction of electromagnetic waves by a. The scattered light goes off in many different directions, and may be scattered again and again before it is finally absorbed.
Electromagnetic field theory a problemsolving approach mit. The scope of this paper is wider than earlier ones in that the orientation of the plane of incidence is arbitrary. Common examples include the reflection of light, sound and water waves. An object at a distance of 30 cm from a concave mirror gets its image at the same point. Reflection and refraction of electromagnetic waves by a moving. The impedance for electromagnetic waves is defined as the ratio between the voltage and current waves, where are inductance and capacitance per unit length in medium. For example, the inductance, capacitance, and impedance of a coaxial cable is given by where a and b are the inner and outer radii of the. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material. Covering the basics of wave propagation, reflection, refraction, anisotropic media, interference, diffraction, and coherence, this questionandanswer collection provides the opportunity to solve problems chosen by a mentor with decades of experience instructing students. Geometrical optics via electromagnetic wave quantization. A pdf document of a powerpoint i used to study reflection and refraction for my national 5 exam. Do not depend on the detailed nature of waves or boundary conditions dynamic properties. Reflection of electromagnetic radiation accessscience.
Contains clear notes and diagrams of diffraction, law of reflection, law of refraction, lenses, total internal reflection and refraction in a prism. Reflection and refraction of electromagnetic waves by the plane boundary of a nonlinear medium. When the object looks like it is broken, it is because the speed of the light wave changed. There may also be reflected and refracted transmitted waves, as shown in fig. Here, we will derive these angle by considering an electric field. Conversely, in refraction, the ray falling on the plane travels from one medium to another. The change of direction of propagation of any wave phenomenon which occurs when the wave velocity changes. Reflection and refraction 17 be scattered away from its original direction figure 2. George green in the nineteenth century, used analogies to obtain the reflection coefficients for sound waves and light waves, before the advent of the electromagnetic theory of light. Apr 04, 2017 light and sound waves do all kinds of cool stuff, because they can be in the same place at the same time, unlike matter.
The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Free pdf download of cbse class 10 science chapter 10 light reflection and refraction multiple choice questions with answers. Reflection and refraction of electromagnetic waves. Commonly observed propagation effects are depicted. A medium is necessary for the propagation of light waves. Nat5 physics wave reflection and refraction teaching. When an electromagnetic wave hits a boundary between different materials, some of the waves. Mcq questions for class 10 science with answers was prepared based on latest exam pattern. This means it is always constructively and destructively interfering with itself.
Pdf reflection and refraction of electromagnetic waves. The angle of reflection is formed between the reflected ray and the normal. In reflection, the angle of incidence is same as the angle of reflection. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Refraction is when waves, whether physical or electromagnetic, are deflected when the waves go through a substance. An electromagnetic wave reaching an interface is partially reflected, partially refracted. Pdf theoretical analysis of reflection and refraction of. The law of reflection concerns the incident and reflected rays as in the case of a beam from a flashlight striking a mirror or, more precisely, the wave normals of the incident and reflected rays and the normal to the reflecting surface all lie in one plane, called the plane of incidence, and that. The simplest reflection laws are those that govern plane waves of radiation. Jan 07, 2020 mcq on reflection and refraction of light with answers pdf question 5. Students can solve ncert class 10 science light reflection and refraction multiple choice questions with answers to know their preparation level. Laws of reflection and refraction from electromagnetic theory.
The classic case for refraction occurs at the boundary of two media. At the boundary, some of the electromagnetic waves will be reflected, and some will. Light waves are electromagnetic nonmechanical waves. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
Snells law is then used to characterize the refraction angle in terms of the complex wavenumber for both media. Propagation of electromagnetic waves radiating systems must operate in a complex changing environment that interacts with propagating electromagnetic waves. Seismic reflectionrefraction imaging has successfully been used in the oil industry to detect buried hydrocarbon traps for about 85 years dobrin, 1976. Refraction when a light wave moves from one medium to another, it changes speed and direction bends what allows us to see images, is the presence of light. Reflection of electromagnetic radiation accessscience from. The colours of the rainbow are seen to exit instead of the white beam. In analogy with the phenomena of reflection and refraction of plane electromagnetic waves in ordinary dielectrics, the kinematical and dynamical aspects of these phenomena are studied, such as the intensity of the various wave components and the change in the polarization of the wave as it crosses the boundary. The bending of the path is an observable behavior when the medium is a two or threedimensional medium. Reflection and snells law electromagnetic geophysics.